What’s the Error? Reeta evaluated -4 + d for d = -6 and gave an answer of 2. What might Reeta have done wrong

Solution:

To answer the given question let us examine the problem deeply using the properties of integers.

Reeta evaluated = -4 + d

d = -6

Putting the value of d = -6

We have, -4 + (-6) = -10

But, -4 - (-6) = -4 + 6 = 2

Here we observed that Reeta has done subtraction in place of addition

✦ Try This: Fill in the blank: a. -7 + (-133) = ____

Now to fill the given blank we can apply integer rules and the order of operation

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 1

NCERT Exemplar Class 7 Maths Chapter 1 Exercise Problem 121

What’s the Error? Reeta evaluated -4 + d for d = -6 and gave an answer of 2. What might Reeta have done wrong

Summary:

After applying the integer rules we examined that Reeta had done subtraction in place of addition

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